Bombtrack Bicycle Company Cale ALWith raucous off road ability and a Sherpa like carrying capacity, its ready for expeditions in the high mountains. The Cale AL is the aluminum alternative to its steely Cale partner, ready to conquer the mountains as sold. Not scrimping on off road potential nor cargo carrying capability, this bike can handle your local trail center or the high peaks in its stride with ease. Fast rolling 29" wheels plus the chance of using oversized 27. 5"+ tires